Quick claimed house to daughter & son law last year

All of the facts are not clear.  For example, there is no apparent connection between your daughter owing taxes and any desire on your part to give her a house.  And the technical term is "quit claim." You may wish to talk to a real estate lawyer, but presuming you did, in fact, quit claim your entire interest in a house to jour daughter and her husband -- presumably in joint tenancy or as husband and wife -- then the house, subject to any mortgage -- is theirs now; your motivations, or their subsequent marriage problems are not relevant.  If you really think your son-in-law "planned" the whole sequence of event, go over them all with legal counsel to see if a claim for fraud can be made out.  otherwise, it seems likely that the house equity, whatever it is, is just a regular marital asset to be deal with in the divorce.