You've asked a really good question. One that I think we have all given some thought to.
I'm sensing you're in a very confusing and difficult time right now, so let me say this; Ecclesiastes states that there are "times and seasons". For instance, there are times when we are strong in our faith and times when we are weak. When we are strong, our union or relationship with Jesus seems secure. When we are weak, we feel as though we are a piece of driftwood carried by the current not knowing where we are going. It may be difficult during these times to really trust God, after all, everything we believed in has been turned upside down. It is during these times that Mary comes to us and leads us back to her son.
During these times, you may feel compelled to cling to her more than Jesus Himself, but that is why He gave her to you....to guide you back to Him! :) You are a part of a family, and each member has their own place and responsibility. She will always be dearer to you during these times since that is her office - bringing weary and wayward souls to her Son. Our Blessed Mother is so loving and maternal that it is impossible to see her work and not realize that it is He, Himself, bringing you back to Him!
He gave her many gifts, and each one extols His greatness! Do not worry that if for a time you seem to cling to her more than to Him. This is temporary, for where she is, you will find Him also. :)