OP,
I am almost 38, and L (my current therapist) is 33, and I have maternal transference towards her. I thought I would only have maternal transference towards women older than me. I also thought that because I didn't have transference with T (currently not seeing), I was past transference. Nope to both.

I'm grateful L works well with transference and that she doesn't find it awkward or uncomfortable. She believes that the therapeutic relationship is what will help with healing. And it does if you have someone skilled at working with it.

How to get past it? No clue. Maybe by working through it? I know ignoring it won't help.

Sorry I can't be of more help. One last thing, you have nothing to be ashamed about. It is common and natural for transference to happen especially in a therapeutic relationship. Just because some haven't experienced it, doesn't make it bad or inappropriate.