Mother in Law problem...Please help?

My husband and his mom are very close. She has spoiled him and coddles him at age 38. He calls her to discuss things that I feel he should talk w/ me. She calls him when she has a question that I can answer just as well. She is the sweetest person and would do anything for anyone, but I have discussed this w/ my husband and it keeps going. Should I take a chance on messing up a good relationship between her and I and talk to her personally?