I definitely see how a therapist could "take advantage" of teletherapy, especially if they're doing those sessions from home (and would be meeting in an office). It could be that they just don't feel like going into the office that day.

I'm lucky in that sense in that my T *prefers* to work in his office, as he says it can be more distracting to be at home (especially if his wife and/or kid are there). So he only does virtual sessions when he has to, like if he's ill enough that he wouldn't want to risk infecting clients, but still feeling OK enough to work. He's also had a few--including a couple last-minute ones--for reasons that he didn't disclose, and those bothered me some. I know he's entitled to his privacy and he doesn't want to make things about him vs. about me--but it can feel a bit arbitrary if he doesn't give some sort of reason (even a pretty vague one), like he or another family member (or pet) isn't feeling well or they had a pipe leak, and he has to let the plumber in.

That being said, I know you said your T doesn't seem sick. However, there can be invisible sort of illnesses where she might look OK and even eat, but not feel well. I get migraines, and it can bother me more to go outside on a sunny day. And her office area might have bright lights. So at home, she can control the lighting. Or it could be she felt bad when she woke up, then took medication and is feeling OK enough to function, but knows it could come back if it pushes herself too hard. Or it could be something like fibromyalgia. Or a GI issue like Crohn's or IBS that is flaring, and she feels better being close to a private bathroom.

But if it's bothering you, I would bring it up. She may not realize that you have a preference and could try to be in the office if it's important to you--or, depending on how flexible your schedule is, maybe she could try to reschedule you for a day when she'll be in if she has to do telehealth one day--or at least give you that option.

Also, it would bother me if my therapist was eating during session in general, unless maybe they asked me first (drinking coffee or water doesn't bother me, as I also have water during session). Once, when I came in, my T was setting a half-eaten apple on his desk. I said he could finish it if he wanted, and he said he's just wait. It would be distracting to me if he was eating. But at the time, I thought maybe he'd missed lunch, so didn't want him to be distracted by hunger either. So if that bothers you, I'd mention it. You've also mentioned having some issues around food/eating, so I could see it being particularly bothersome, so I'd think she'd want to be sensitive to that.

Sorry, that ended up kind of long! Tldr; I'd speak up about it bothering you.