I need some advice

My friend and I hav been friends since 2nd term and we r pretty close but I dont know if we should still b friends. We r both 15 and she has done some things that a 4yo would do:

1. Lied quite a few times
2. Taken my good jeans(and I know it wasn't an accident because her jeans r different colour)
3. Scared my horse when I was on him when I had told her to stop

I am not sure if I can still be her friend.
Please help me