Are you sure that your father actually left a will? Many (possibly most) people never get around to writing one.
If your father and mother jointly owned a house as 'joint tenants' then the whole of the property will AUTOMATICALLY have passed into the sole ownership of your mother upon his death. That would apply irrespective of whether your father left a will or not. (If they co-owned the property as 'tenants in common' then he would have been able to leave his share of the house to whomever he chose to do so under the terms of a will but then the will would have needed to go to probate).
So it seems more likely that it's your mother's will, rather than your father's, which is relevant here.
I think that we might need some more information here if we're to be able to help. (A polite request: Please include some punctuation in any further post you submit. I'm honestly not 'having a go' at your written English; I'm simply seeking clarity in what you tell us, so that we can offer the best advice).