"Let's break it down: State laws may vary slightly, but the typical scheme of most states, including Florida (§732.101 to §732.111), is that intestate property passes in this order: spouse, descendants (children or grandchildren), parents, siblings (and children of deceased siblings).
In Florida, if you are married when you die and have no will, your spouse will inherit everything, even if you have children together. However, if you have children from previous marriages or relationships, then your spouse will inherit half your estate and all of your children will share the remaining half, including any children you had with that spouse."
From:
What Happens to Your Estate if You Die Without a Will in Florida?
I suggest both of you see a lawyer to sort things out as estate matters involving intestate succession in second and subsequent marriages can get very messy and possibly expensive. Unintended consequences are common and can prove harsh.