Would you snitch on a TM

I’ve been a TM for almost 2 years, mostly style and covering front lanes and tech. A new TM started about 3 months ago and we have worked together in style many times. She’s always on her phone and gets annoyed if I ask her about things that need to be done. Every time I’ve worked with her I have to stay late to finish up metros or reshop, because she isn’t doing her part. I don’t think the TLs are aware of her lazy ass, because it happens all the time and nothing has been done about it. Should I bring this up to the TL and how should I do this? Today was extra busy because of back to school and shit, I’m so done