Stanza "number" alignment

[Br. Samuel Springuel]

In the following snippet, is there a way to set the alignment of the 
"℟." so that it always appears after the barline, rather than under it. 
I expect more space needs to be added to the bar in which it appears for 
this to happen.

Also, is there a way to eliminate the need for the "." to make the lyric 
extender appear?

\version "2.19.53"

#(ly:set-option 'relative-includes #t)
\version "2.19.53"
\language "english"

global = { \key g \major }

music = {
    a'4 g'2 g'4 g' f-sharp' e' g' \bar "|"
    g' f-sharp'( g') e' f-sharp' g' \bar ":|."
}

words = \lyricmode {
    \set stanza = \markup "℣." "." __ _ we pray to the Lord.
    \set stanza = \markup "℟." O Lord, hear our paryer.
}

\new Staff
<<
    \new Voice = "mel" { \global \music }
    \new Lyrics \lyricsto "mel" { \words }
>>
--
✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝
Br. Samuel, OSB
St. Anselm’s Abbey
Washington, DC
(R. Padraic Springuel)

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