Ridgetown is in Howard Township, Kent County so start looking in that area.
1911 census Ridgetown, Kent East has a Joseph, 62, and Sarah,59, Chambers and son Morland, 23 but no Mable. They are the only Chambers in Ridgetown.
1911 census has a Thomas and Hannah Rylett living in Bosanquet Kent West.
1901 and 1911 census on www.automatedgenealogy.com
1901 census Ridgetown Elgin West [ County has changed]
Joseph,head, 6 Feb 1849, 52, b Ontario, day labourer
Sarah J, wife, 1 Jun 1851, 49, Ont
Eliza M, daughter, 15 Sep 1882, 19
David M R, son, 2 Oct 1887, 13
Eliza M could be your Mable? Strong possibility that this is your Chambers family.
I don't see any Eliza M or Mabel on 1911 census but she should be around Ridgetown someplace.
Couldn't find anything else on Eliza M or Mable.
1891 census Ancestry.ca
Ridgetown, Elgin West
Joseph, 42, b Ont
Sarah Jane, 40, Ont
Eliza M, 9, Ont
James Arthur 6,Ont
David M R, son, 3, Ont
Looks like Eliza M's name is Aliza Malvena b 15 Sep 1881 in Burford, Brant County, d/o Joseph Chambers & Sarah Jane Kelso. From Ancestry.ca
James Arthur b Brant County, 23 Jul 1884. Parents as above.
They must have moved to Elgin/Kent later.
You will have to decide whether this is your Mabel or not.