You're a very good daughter for putting your mother's needs in front of your own at a time when she is struggling. I respect that a lot. Maybe you can think of it as rising above your feelings for the greater good as opposed to faking it. It might help the feels feel a bit more genuine. It is your genuine good charater that leads you to know this is the right thing to do. That is a real aspect of yourself. You're just forcing it forward at a time when another aspect wishes to be dominant. We do that all the time for various reasons. It doesn't make you fake. Faking it would be denying yourself the acceptance and understanding that you are feeling low. You aren't doing that. You're aware and dialed in to how you feel. You're simply manifesting something else in its place out of need and love for your mother. That's selfless and beautiful.

Your mother is fortunate to have you!